'How I Met Your Mother' - 'The Final Page': Barney's hail Mary

Several questions come to mind after watching Monday's (Dec. 17) hour-long "How I Met Your Mother":1. Will Barney still take a wiffle bat to Ted's baguettes, even though he secretly wanted Ted to break the jinx swear?2. What was up with Peter Gallagher's hair?3. Did Alyson Hannigan, Seth Green and Alexis Denisof hang out on set a lot and reminisce about "Buffy"?And 4, and most important: Was that all really necessary?We've seen Robin and Barney's wedding day, so it follows that sometime this season they'd have to end up back together. And because they were fun together before, it's an acceptable leap to think that Barney and Robin, the two most commitment-phobic people on Earth, would fall back in love and want to get married.Heck, we'll even grant that Barney felt like he had to give Robin the "I'm done chasing you" bit a few episodes back to make her reconsider what might be. But...